Illinois offers affordable housing with a median price of $298,600 and a cost-of-living index of 95.0. Notable towns include Ottawa, with historic sites and scenic parks; Galena, known for 19th-century architecture and countryside views; Quincy, featuring blufftop streets and historic landmarks; and Grafton, located at the confluence of two rivers with natural attractions. The state boasts over 60 parks and seven scenic byways, blending small-town charm with natural beauty.